Questions

A pure substance can be defined as any single type of material that has not been contaminated by another substance. In chemistry, a pure substance has a definite composition. It can be a compound or an element. A pure substance is considered to be a material that consists of one type of "building block" of matter.

Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate).

Tin, sulfur, and diamond are examples of pure substances which are chemical elements. All elements are pure substances.

Water, sugar, salt and baking soda are pure substances which are chemical compounds. Chemical compounds also are pure substances

Odisha Chief Minister Naveen Patnaik has unveiled the logo and mascot of the 22nd Asian Athletics Championships scheduled to be held at the Kalinga Stadium in Bhubaneshwar from July 6 to 9, 2017.

 Mr. Patnaik also formally announced Bhubaneswar as the host for the sports event. The mascot, named Olly Turtle, depicts the Olive Ridley turtles.

Qualm means feeling confused, uneasiness, very doubtful and being in worry.

Hence, among the given options, Qualm is the opposite of Confidence.

The Van Vihar National Park is located in Bhopal, the capital city of Madhya Pradesh. It covers an area of about 4.45 sq.km and is home to Bengal Tiger, Asiatic Lions, wild cats, Indian Wolf, Sloth Bear, Red Fox, Indian Jackal, Wild Dog, Mongoose, Striped Hyena, Mugger Crocodile, Gharial, Snakes, Python, etc.